CN114283977B - Cross-linked thick steel wire armored polyethylene sheath power cable and manufacturing method thereof - Google Patents
Cross-linked thick steel wire armored polyethylene sheath power cable and manufacturing method thereof Download PDFInfo
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- CN114283977B CN114283977B CN202111475514.9A CN202111475514A CN114283977B CN 114283977 B CN114283977 B CN 114283977B CN 202111475514 A CN202111475514 A CN 202111475514A CN 114283977 B CN114283977 B CN 114283977B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The invention discloses a crosslinked thick steel wire armored polyethylene sheath power cable and a manufacturing method thereof, wherein the crosslinked thick steel wire armored polyethylene sheath power cable comprises an inner wrapping sleeve, a wire core main body which is uniformly and densely distributed is arranged in an inner cavity of the inner wrapping sleeve, a middle wrapping sleeve is sleeved on the surface of the inner wrapping sleeve, an outer wrapping sleeve is sleeved on the surface of the middle wrapping sleeve, an aluminum pipe sleeve is sleeved on the surface of the outer wrapping sleeve, and an end socket tightening piece is sleeved on the surface of the aluminum pipe sleeve. According to the invention, the steel wire armor and the polyethylene protective sleeve are additionally arranged on the surface of the cable to form the crosslinked polyethylene armor with the net-shaped branching structure, so that the long-term allowable working temperature is increased from 70 ℃ to 90 ℃ or higher, the short-circuit allowable temperature is increased from 140 ℃ to 250 ℃ or higher, the actual use performance is greatly improved on the premise of keeping the original excellent electrical performance, and compared with the traditional cable, the cable can be protected from being damaged by external force, and different use requirements of the cable can be met.
Description
Technical Field
The invention relates to the technical field of power cables, in particular to a cross-linked coarse steel wire armored polyethylene sheath power cable and a manufacturing method thereof.
Background
The power cable is a cable for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station outgoing lines, power supply in industrial and mining enterprises and power transmission lines under the river sea water, wherein the proportion of the cable in the power lines is gradually increasing, and the power cable is a cable product for transmitting and distributing high-power electric energy in a main line of a power system, and comprises various voltage levels of 1-500KV and above and various insulated power cables.
The conventional power cable has the following drawbacks:
1. the traditional cable is generally characterized in that the surface of the cable core is directly coated with the rubber sleeve, but the rubber sleeve is directly coated, so that the high temperature resistance degree of the cable when the cable is short-circuited to generate sparks is reduced, the cable is easy to fire, the fire spreads rapidly, enough rescuing time is difficult to be achieved, and even surrounding electrical equipment is damaged.
2. The traditional cable is not provided with a protective fixing structure at the end part, so that the end part of the cable is easy to be uneven in the cutting and using process, the end part of the cable is fried outwards in a layer-by-layer manner, the cable is difficult to be completely matched with equipment in wiring, and the fried end part is easier to fire.
3. The traditional cable is also different in damage under different use environments, for example, the traditional cable is impacted by external force, and the damage of broken stone and the like can be caused.
Disclosure of Invention
The invention aims to provide a crosslinked thick steel wire armored polyethylene sheath power cable and a manufacturing method thereof, which have the advantages of high resistance of the cable, wen Chengdu, difficult ignition and slow fire propagation, and solve the problems that the traditional cable is generally coated with a rubber jacket directly on the surface of a cable core, but the rubber jacket is directly coated in such a way that the high temperature resistance degree of the cable is reduced when the cable is in short circuit to generate sparks, the cable is easy to ignite, the fire spreads rapidly, enough rescuing time is difficult to cause even damage to surrounding electrical equipment, the traditional cable is not provided with a protective fixing structure at the end part, the end part of the cable is easy to be uneven in the cutting and using process, the end part of the cable is hard to be completely matched with the equipment in the wiring process, and the end part of the cable is also easy to ignite.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a crosslinked thick steel wire armor polyethylene sheath power cable and manufacturing method thereof, includes inboard parcel cover, inboard parcel cover's inner chamber is provided with the sinle silk main part of even and intensive distribution, inboard parcel cover's surface has cup jointed the middle level parcel cover, middle level parcel cover's surface has cup jointed outside parcel cover, outside parcel cover's surface has cup jointed the aluminum product pipe box, aluminum product pipe box's surface has cup jointed end cramp, the equal fixed mounting in both ends of end cramp front side has the series connection mounting.
The power cable for cross-linking the coarse steel wire armored polyethylene sheath disclosed by the invention is further provided with: the aluminum pipe sleeve is characterized in that first insertion holes are formed in two sides of the surface of the aluminum pipe sleeve, second insertion holes are formed in two sides of the surface of the outer wrapping sleeve, and third insertion holes are formed in two sides of the surface of the middle wrapping sleeve.
The power cable for cross-linking the coarse steel wire armored polyethylene sheath disclosed by the invention is further provided with: the serial connection fixing piece comprises two fixing blocks welded on the end tightening piece, a third bolt matched with the jack in three phases is welded at the front end of one side of the fixing block, a first bolt matched with the jack in two phases is welded at one side of the fixing block, and a second bolt matched with the jack in one rear side of the fixing block is welded at one side of the fixing block.
The power cable for cross-linking the coarse steel wire armored polyethylene sheath disclosed by the invention is further provided with: the surface of aluminum pipe cover has cup jointed steel wire armor, the surface of steel wire armor has cup jointed polyethylene sheath pipe.
The power cable for cross-linking the coarse steel wire armored polyethylene sheath disclosed by the invention is further provided with: the inner cavity of the polyethylene sheath tube is provided with a steel wire armor mounting groove matched with the steel wire armor, and the surface of the wire core main body is sleeved with an insulating sleeve.
The power cable for cross-linking the coarse steel wire armored polyethylene sheath disclosed by the invention is further provided with: the steel wire armor is spirally wound on the surface of the aluminum pipe sleeve.
The power cable for cross-linking the coarse steel wire armored polyethylene sheath disclosed by the invention is further provided with: the front layer and the rear layer of the surface of the steel wire armor are attached.
The power cable for cross-linking the coarse steel wire armored polyethylene sheath disclosed by the invention is further provided with: the insulating sleeve is made of rubber materials added with aluminum hydroxide.
The power cable for cross-linking the coarse steel wire armored polyethylene sheath disclosed by the invention is further provided with: the diameter of the front end of the surface of the aluminum pipe sleeve is smaller than that of the rear side of the surface of the aluminum pipe sleeve, and the diameters of the front and rear sides of the inner cavity of the aluminum pipe sleeve are the same.
A method of manufacturing a crosslinked thick wire armored polyethylene jacketed power cable, the method comprising:
1. firstly, a user puts the prepared rubber material into a hot melting device to melt, and adds a proper amount of aluminum hydroxide, and uniformly stirs the rubber material for standby.
2. Taking out the melted rubber solution, filling the melted rubber solution into shaping equipment, and then carrying out extrusion molding on the melted rubber solution through the shaping equipment to form a hollow rubber tube, sleeving the hollow rubber tube on a wire core main body, and keeping the wire core main body for standby.
3. Taking an aluminum sheath with the thickness of two centimeters, and pressing the aluminum sheath on a bending machine to form a tube shape.
4. And (3) moving the tubular aluminum pipe sleeve to a grooving machine, and forming an annular grooving with a width of one centimeter and a depth of one and a half centimeters at the end head of the surface of the aluminum pipe sleeve, wherein the aluminum pipe sleeve is ready for use after finishing processing.
5. And then two aluminum skins with the thickness of one centimeter are taken, one of the iron sheets is processed into an outer wrapping sleeve which is inserted into the inner cavity of the aluminum pipe sleeve, and the other iron sheet is processed into a middle wrapping sleeve which can be inserted into the inner cavity of the outer wrapping sleeve.
6. When the middle layer wrapping sleeve is processed, the inner cavity of the middle layer wrapping sleeve needs to be polished, so that the inner side wrapping sleeve can be inserted into the inner cavity of the middle layer wrapping sleeve.
7. Winding a layer of steel wire armor on the surface of the aluminum pipe sleeve, and spot-welding two ends of the steel wire armor on the aluminum pipe sleeve after winding is completed.
8. And finally, sleeving a polyethylene protective sleeve on the surface of the steel wire armor, sleeving an upper end socket hooping piece on the aluminum pipe sleeve, respectively inserting a first bolt, a second bolt and a third bolt on the upper end socket hooping piece into the first jack, the second jack and the third jack for positioning and fixing, enabling the end of the polyethylene protective sleeve to be in contact with the end socket hooping piece, and spot-welding the polyethylene protective sleeve on the end socket hooping piece to complete the assembly of the cable.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the steel wire armor and the polyethylene protective sleeve are additionally arranged on the cable surface to form the crosslinked polyethylene armor of the reticular branching structure, so that the working temperature is allowed to be increased to 90 ℃ or higher from 70 ℃ for a long time, the short circuit allowable temperature is increased to 250 ℃ or higher from 140 ℃, the actual service performance is greatly improved on the premise of keeping the original excellent electrical performance of the cable, compared with the traditional cable, the cable is additionally provided with the steel wire armor at the outermost periphery of the cable, the cable is protected, the cable can be protected from being damaged by external force, different use requirements of the cable can be met, the end tightening piece and the serial connection fixing piece can also tightly tighten the end of the cable, the cable is prevented from being opened, the purpose of limiting fire is achieved, the crosslinked thick steel wire armored polyethylene sheath power cable and the manufacturing method thereof have the advantages that the cable is high-resistant and Wen Chengdu, the fire is difficult to occur, the traditional cable is generally coated with the rubber sleeve directly on the surface of the cable, the cable is coated with the rubber sleeve, the cable is easy to be cut off at the cable, the cable is easy to be opened at the outer side of the cable, the cable is difficult to be completely broken, the cable is difficult to be easily, and the cable is prevented from being opened at the outer side of the cable, the cable is easy to be completely, the cable is easy to be broken, and the cable is difficult to be opened, and the cable is easy to be completely to be opened, and the cable is in the cable is easy to be opened, and the cable is in the cable to be broken, and the cable is in the cable to be completely to be opened when the cable.
2. The end socket of the cable can be tightly clamped by the end socket clamping piece and the serial connection fixing piece, so that the cable is prevented from being fried.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1A in accordance with the present invention;
FIG. 3 is a perspective assembly view of the inner wrap, middle wrap and outer wrap of the present invention;
FIG. 4 is a perspective view of an end clamp of the present invention;
FIG. 5 is a perspective view of a serial fastener of the present invention;
fig. 6 is an exploded perspective view of the steel wire armor and polyethylene jacket tube of the present invention.
In the figure: 1. a core body; 2. an inner wrapping sleeve; 3. a middle layer wrapping sleeve; 4. an outer wrap; 5. an aluminum pipe sleeve; 6. an end tightening member; 7. a series connection fixing piece; 8. steel wire armor; 9. polyethylene sheath tube; 10. an insulating sleeve; 11. a jack I; 12. a second jack; 13. a third jack; 14. a steel wire armor mounting groove; 71. a fixed block; 72. a first bolt; 73. a second bolt; 74. and a third bolt.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the invention provides a technical scheme, a cross-linked coarse steel wire armored polyethylene sheath power cable and a manufacturing method thereof, the cross-linked coarse steel wire armored polyethylene sheath power cable comprises an inner wrapping sleeve 2, a wire core main body 1 which is uniformly and densely distributed is arranged in an inner cavity of the inner wrapping sleeve 2, a middle wrapping sleeve 3 is sleeved on the surface of the inner wrapping sleeve 2, an outer wrapping sleeve 4 is sleeved on the surface of the middle wrapping sleeve 3, an aluminum pipe sleeve 5 is sleeved on the surface of the outer wrapping sleeve 4, an end socket tightening piece 6 is sleeved on the surface of the aluminum pipe sleeve 5, and serial fixing pieces 7 are fixedly arranged at two ends of the front side of the end socket tightening piece 6.
As a preferable scheme in the present embodiment: the two sides of the surface of the aluminum pipe sleeve 5 are provided with first jacks 11, the two sides of the surface of the outer wrapping sleeve 4 are provided with second jacks 12, and the two sides of the surface of the middle wrapping sleeve 3 are provided with third jacks 13.
As a preferable scheme in the present embodiment: the serial connection fixing piece 7 comprises two fixing blocks 71 welded on the end tightening piece 6, a third bolt 74 matched with the third jack 13 is welded at the front end of one side of the fixing blocks 71, a first bolt 72 matched with the second jack 12 and positioned at the rear side of the third bolt 74 is welded at one side of the fixing blocks 71, and a second bolt 73 matched with the first jack 11 and positioned at the rear side of the first bolt 72 is welded at one side of the fixing blocks 71.
The power cable for cross-linking the coarse steel wire armored polyethylene sheath disclosed by the invention is further characterized in that: the surface of the aluminum pipe sleeve 5 is sleeved with a steel wire armor 8, and the surface of the steel wire armor 8 is sleeved with a polyethylene protective sleeve 9.
The power cable for cross-linking the coarse steel wire armored polyethylene sheath disclosed by the invention is further characterized in that: the inner cavity of the polyethylene sheath pipe 9 is provided with a steel wire armor mounting groove 14 matched with the steel wire armor 8, and the surface of the wire core main body 1 is sleeved with an insulating sleeve 10.
As a preferable scheme in the present embodiment: the steel wire armor 8 is wound on the surface of the aluminum pipe sleeve 5 in a spiral mode.
As a preferable scheme in the present embodiment: the front layer and the rear layer of the surface of the steel wire armor 8 are attached.
As a preferable scheme in the present embodiment: the insulating bush 10 is made of a rubber material to which aluminum hydroxide is added.
As a preferable scheme in the present embodiment: the diameter of the front end of the surface of the aluminum pipe sleeve 5 is smaller than that of the rear side of the surface of the aluminum pipe sleeve 5, and the diameters of the front and rear sides of the inner cavity of the aluminum pipe sleeve 5 are the same.
The manufacturing method of the crosslinked thick steel wire armored polyethylene sheath power cable comprises the following steps:
1. firstly, a user puts the prepared rubber material into a hot melting device to melt, and adds a proper amount of aluminum hydroxide, and uniformly stirs the rubber material for standby.
2. Taking out the melted rubber solution, filling the melted rubber solution into shaping equipment, and then extruding and molding the melted rubber solution through the shaping equipment to form a hollow rubber tube, sleeving the hollow rubber tube on the wire core main body 1, and keeping the wire core main body for standby.
3. Taking an aluminum sheath with the thickness of two centimeters, and pressing the aluminum sheath on a bending machine to form a tube shape.
4. The tubular aluminum pipe sleeve 5 is moved to a grooving machine, an annular grooving with a width of one centimeter and a depth of a little five centimeters is formed in the end of the surface of the aluminum pipe sleeve 5, and the aluminum pipe sleeve 5 is ready for use after being processed.
5. And then two aluminum skins with the thickness of one centimeter are taken, one of the iron sheets is processed into an outer wrapping sleeve 4 which is inserted into the inner cavity of the aluminum pipe sleeve 5, and the other iron sheet is processed into a middle wrapping sleeve 3 which can be inserted into the inner cavity of the outer wrapping sleeve 4.
6. When the middle layer wrapping sleeve 3 is processed, the inner cavity of the middle layer wrapping sleeve 3 needs to be polished, so that the inner side wrapping sleeve 2 can be inserted into the inner cavity of the middle layer wrapping sleeve 3.
7. Winding a layer of steel wire armor 8 on the surface of the aluminum pipe sleeve 5, and spot-welding two ends of the steel wire armor 8 on the aluminum pipe sleeve 5 after winding.
8. Finally, a polyethylene protective sleeve 9 is sleeved on the surface of the steel wire armor 8, an end socket hooping piece 6 is sleeved on the aluminum pipe sleeve 5, a first bolt 72, a second bolt 73 and a third bolt 74 on the steel wire armor are respectively inserted into a first jack 11, a second jack 12 and a third jack 13 to be positioned and fixed, the end of the polyethylene protective sleeve 9 is in contact with the end socket hooping piece 6, and the polyethylene protective sleeve 9 is spot-welded on the end socket hooping piece 6 to complete the assembly of the cable.
To sum up: the crosslinked thick steel wire armored polyethylene sheath power cable and the manufacturing method thereof form the crosslinked polyethylene armor of the reticular branching structure by adding the steel wire armor 8 and the polyethylene sheath tube 9 on the surface of the cable, so that the working temperature is allowed to be increased from 70 ℃ to 90 ℃ or higher for a long time, the short circuit is allowed to be increased from 140 ℃ to 250 ℃ or higher, the practical use performance is greatly improved on the premise of keeping the original excellent electrical performance of the cable, compared with the traditional cable, the steel wire armor is additionally arranged on the outermost periphery of the cable, the cable has the protection function, the cable is protected from being damaged by external force, the different use requirements of the cable can be met, the end hooping piece 6 and the serial connection fixing piece 7 can also tightly tighten the end of the cable, the cable is prevented from being fried open, and the aim of limiting the fire behavior can be achieved, the crosslinked thick steel wire armored polyethylene sheath power cable and the manufacturing method thereof have the advantages that the cable is high in resistance to Wen Chengdu, is not easy to fire, and is slow in fire propagation, the problems that the traditional cable is generally coated with a rubber sleeve directly on the surface of a cable core, but the rubber sleeve is directly coated in such a way that the high temperature resistance degree of the cable is reduced when sparks are generated due to short circuit, the cable is easy to fire, the fire is fast spread, enough rescuing time is difficult to realize, even surrounding electrical equipment is damaged, the traditional cable is not provided with a protective fixing structure at the end part, the end part of the cable is easy to be uneven in the cutting and using process, the end part of the cable is easy to be opened outwards one layer by one layer, the cable is difficult to be completely fit with the equipment in the wiring process, but also the end portions of the frying open are more prone to fire problems.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a crosslinked thick steel wire armor polyethylene sheath power cable, includes inboard parcel cover (2), its characterized in that: the inner cavity of the inner wrapping sleeve (2) is provided with a wire core main body (1) which is uniformly and densely distributed, the surface of the inner wrapping sleeve (2) is sleeved with a middle wrapping sleeve (3), the surface of the middle wrapping sleeve (3) is sleeved with an outer wrapping sleeve (4), the surface of the outer wrapping sleeve (4) is sleeved with an aluminum pipe sleeve (5), the surface of the aluminum pipe sleeve (5) is sleeved with an end socket clamping piece (6), and two ends of the front side of the end socket clamping piece (6) are fixedly provided with serial fixing pieces (7); the two sides of the surface of the aluminum pipe sleeve (5) are provided with first insertion holes (11), the two sides of the surface of the outer wrapping sleeve (4) are provided with second insertion holes (12), and the two sides of the surface of the middle wrapping sleeve (3) are provided with third insertion holes (13); the series connection mounting (7) is including welding two fixed blocks (71) on end hooping spare (6), the front end welding of fixed block (71) one side has with the bolt third (74) of jack third (13) looks adaptation, the one side welding of fixed block (71) has and is located bolt third (74) rear side and with bolt first (72) of jack second (12) looks adaptation, the one side welding of fixed block (71) has and is located bolt first (72) rear side and with bolt second (73) of jack first (11) looks adaptation.
2. The crosslinked steel raw armored polyethylene jacketed power cable of claim 1, wherein: the surface of aluminum pipe sleeve (5) has cup jointed steel wire armor (8), the surface of steel wire armor (8) has cup jointed polyethylene sheath pipe (9).
3. The crosslinked steel raw armored polyethylene jacketed power cable of claim 2, wherein: the inner cavity of the polyethylene sheath tube (9) is provided with a steel wire armor mounting groove (14) matched with the steel wire armor (8), and the surface of the wire core main body (1) is sleeved with an insulating sleeve (10).
4. A crosslinked steel raw armoured polyethylene jacketed power cable according to claim 3, characterized in that: the steel wire armor (8) is spirally wound on the surface of the aluminum pipe sleeve (5).
5. The crosslinked steel raw armored polyethylene jacketed power cable of claim 4, wherein: the front layer and the rear layer of the surface of the steel wire armor (8) are attached.
6. The crosslinked steel raw armored polyethylene jacketed power cable of claim 5, wherein: the insulating sleeve (10) is made of a rubber material added with aluminum hydroxide.
7. The crosslinked steel raw armored polyethylene jacketed power cable of claim 6, wherein: the diameter of the front end of the surface of the aluminum pipe sleeve (5) is smaller than the diameter of the rear side of the surface of the aluminum pipe sleeve (5), and the diameters of the front and rear of the inner cavity of the aluminum pipe sleeve (5) are the same.
8. The method of manufacturing a crosslinked steel raw wire armored polyethylene jacketed power cable of claim 7, as follows:
1. firstly, a user puts the prepared rubber material into a hot melting device to melt, and adds a proper amount of aluminum hydroxide, and uniformly stirs the rubber material for standby;
2. taking out the melted rubber solution, filling the melted rubber solution into shaping equipment, extruding and molding the melted rubber solution through the shaping equipment to form a hollow rubber tube, sleeving the hollow rubber tube on a wire core main body (1), and keeping the wire core main body for standby;
3. taking an aluminum skin with the thickness of two centimeters, and pressing the aluminum skin on a bending machine to form a tube shape;
4. moving a tubular aluminum pipe sleeve (5) to a grooving machine, forming an annular grooving with a width of one centimeter and a depth of one and a half centimeters at the end of the surface of the aluminum pipe sleeve (5), and reserving the aluminum pipe sleeve (5) for standby after finishing processing;
5. then two aluminum outer skins with the thickness of one centimeter are taken, one iron sheet is processed into an outer wrapping sleeve (4) which is inserted into the inner cavity of the aluminum pipe sleeve (5), and the other iron sheet is processed into a middle wrapping sleeve (3) which can be inserted into the inner cavity of the outer wrapping sleeve (4);
6. when the middle layer wrapping sleeve (3) is processed, the inner cavity of the middle layer wrapping sleeve (3) needs to be polished, so that the inner side wrapping sleeve (2) can be inserted into the inner cavity of the middle layer wrapping sleeve (3);
7. winding a layer of steel wire armor (8) on the surface of the aluminum pipe sleeve (5), and spot-welding two ends of the steel wire armor (8) on the aluminum pipe sleeve (5) after winding;
8. finally, a polyethylene protective sleeve (9) is sleeved on the surface of the steel wire armor (8), an end socket hooping piece (6) is sleeved on the aluminum pipe sleeve (5), a first bolt (72), a second bolt (73) and a third bolt (74) are respectively inserted into the first jack (11), the second jack (12) and the third jack (13) to be positioned and fixed, the end socket of the polyethylene protective sleeve (9) is in contact with the end socket hooping piece (6), and the polyethylene protective sleeve (9) is spot-welded on the end socket hooping piece (6), so that the assembly of the cable is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111475514.9A CN114283977B (en) | 2021-12-06 | 2021-12-06 | Cross-linked thick steel wire armored polyethylene sheath power cable and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111475514.9A CN114283977B (en) | 2021-12-06 | 2021-12-06 | Cross-linked thick steel wire armored polyethylene sheath power cable and manufacturing method thereof |
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| CN114283977B true CN114283977B (en) | 2023-07-25 |
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| Publication number | Publication date |
|---|---|
| CN114283977A (en) | 2022-04-05 |
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